| article html file updated | 7 February 2020 19:36 CET | Update | https://www.mdpi.com/2224-2708/5/4/19 |
| article html file updated | 22 September 2019 11:28 CEST | Update | - |
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| article html file updated | 29 December 2016 06:45 CET | Update | - |
| article html file updated | 14 December 2016 11:09 CET | Original file | - |
| article xml uploaded. | 14 December 2016 11:07 CET | Original file | https://www.mdpi.com/2224-2708/5/4/19/xml |
| article pdf uploaded. | 14 December 2016 11:07 CET | Version of Record | https://www.mdpi.com/2224-2708/5/4/19/pdf |
